Data For Input/Output And Battery Over Current Protection And Wire Sizing - ABB MegaFlex 1000 UL S1 Installation Manual

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4.8.5 Data for Input/Output and Battery over current protection and wire sizing

Note!
Please read the safety precautions at the front of this guide carefully, and thoroughly review the
Battery manufacturers installation and maintenance manual before connecting the Batteries to the
UPS.
Disconnect devices on DC input and AC output are required and are not provided inside the UPS.
They shall be part of the building installation.
Fig. 4.8.5-1 Dual Input Utility Rectifier & Bypass
The AC values below are current ratings per phase.
These maximum and nominal ratings should be considered when choosing the appropriate AC over current
protection device.
DC current rating is the nominal Battery discharge current with 1.8 V/cell (see Fig. 4.8.4-1 & Fig. 4.8.4.2).
Wiring shall not be sized for more than 2.0 Vdc/cell.
UPS rating
Nom.
MegaFlex 1000
1260 A
MegaFlex 1100 1385 A
MegaFlex 1200
1510 A
MegaFlex 1500
1890 A
MegaFlex 1600
2015 A
AC Input Rectifier
CB1
Max.
1386 A
1510 A
1638 A
2058 A
2185 A
MegaFlex 1000 to 1600
Fig. 4.8.5-2 Common Input Utility Rectifier & Bypass
AC Input Bypass
CB2
1202 A
1323 A
1443 A
1805 A
1925 A
UPS Installation Guide / REV-A
AC Input
CB3
Nom. Max.
1260 A 1386 A
1385 A 1510 A
1510 A 1638 A
1890 A 2058 A
2015 A 2185 A
DC Input
CB4
2388 A
2626 A
2865 A
3582 A
3820 A